Foldable armchair



FIG. 1 is a front perspective view of a foldable armchair showing my new design;

FIG. 2 is a right side view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a front perspective view thereof with the chair folded; and,

FIG. 8 is a left side view of the folded chair shown in FIG. 7. 

The ornamental design for a foldable armchair, as shown and described. 